9Q Mr. D. Sharp on some 



loped. Slight differences in less important points are also 

 to be observed. The anterior impression of the thorax is 

 quite distinct, but the lateral impressions are not easily 

 seen. 



Of this species I have also received a pair from Mr. 

 Blackburn, as Nos. 177 and 178 ; they were found on the 

 mountains of Kauai, by beating dry sticks. 



Proterhinus collaris, n. sp. Elongatulus, sat convexus, 

 nigricans, setis depressis conspicue maculatim vestitus, 

 setis eiectis sat conspicuis ; antennis elongatis, articulo 

 basali prajsertim elongato ; fronte deusius squamoso ; pro- 

 thorace elongato, anterius impresso, dense fortiter punctato ; 

 elytris fortiter punctatis, maculis setarum sericatis, basi 

 emarginatis, sed humeris vix acutis. Long. 3| mm. 



This is a pretty little species with elongate thorax, and 

 irregularly marked with patches of whitish silky setae ; the 

 upper portion of the head is more than usually densely 

 clothed with yellowish setse ; the antennae are blackish, 

 elongate and slender. The impression on the front of the 

 thorax is rather distinct, but the lateral ones are scarcely 

 represented. The hind legs are considerably longer than 

 in P. vestitus. The tibite in the middle and the base of 

 the femora are more or less distinctly rufescent. 



I have received a pair as Nos. 175 and 176, and am in- 

 formed by Mr. Blackburn that the species occurs sparingly 

 in several localities on Kauai, in dry bark. 



Proterhinus humeralis, n. sp. Angustulus ; oculis 

 mediocribus ; fusco-rufus, parum distincte variegatus, setis 

 depressis et erectis vestitus ; prothorace elongato, evi- 

 denter tri-impresso, parum distincte punctato, lateribus 

 rotundatis, antrorsum minus evidenter constricto ; elytris 

 basin versus angustatis, humeris acutis antrorsum pro- 

 ductis, profunde fortiter punctatis, setis erectis parum 

 conspicuis. Long. 2| — 2^ mm. 



The antennee are very obscure red, getting darker 

 toAvards the extremity, they are rather largely developed, 

 the three terminal joints elongate, and quite distinctly 

 thicker than the preceding ones ; the punctures on the 

 elytra are deep but not dense, and those on the basal por- 

 tion, near the suture, are almost arranged in rows. 



This is another of the obscure and difficult species allied 

 to P. vestitus ; it is narrower than that species, however. 



